body {
  background: #323133;
}
@font-face{
     font-family: '情书'; 
     src: url('../font/情书体.ttf');
	 }

 .snow_view {
   margin: 0;
   margin-top: 30px;
   background-position: 50% 50%;
   background-size: cover;
 
  
   display: flex;
   justify-content: center;
   align-items: center;
   height: 95vh;
   margin: 0;
 }
.tree ul {
  padding: 0;
}
.tree ul li {
  list-style: none;
}
.tree ul:nth-child(1) {
  position: absolute;
  top: calc(20vh - 1.6rem);
  left: 50%;
  width: 1rem;
  height: 1rem;
  border-radius: 100%;
  transform: translate(-50%, -50%);
}
.tree ul:nth-child(1) li {
  position: absolute;
  width: 0;
  height: 0;
  border-width: 0 0.5rem 1rem 0.5rem;
  border-style: solid;
  border-color: transparent;
  border-bottom-color: #FFCE54;
  transform-origin: 0.5rem 1rem;
}
.tree ul:nth-child(1) li:nth-child(0) {
  transform: rotate(0deg);
}
.tree ul:nth-child(1) li:nth-child(1) {
  transform: rotate(72deg);
}
.tree ul:nth-child(1) li:nth-child(2) {
  transform: rotate(144deg);
}
.tree ul:nth-child(1) li:nth-child(3) {
  transform: rotate(216deg);
}
.tree ul:nth-child(1) li:nth-child(4) {
  transform: rotate(288deg);
}
.tree ul:nth-child(2) {
  padding: 0;
}
.tree ul:nth-child(2) li {
  position: absolute;
  top: 20vh;
  right: 50%;
  width: 0.0625rem;
  background: linear-gradient(rgba(46, 204, 113, 0), rgba(46, 204, 113, 0.25));
  list-style: none;
  transform-origin: 50% 0;
  animation: swing 4s ease-in-out infinite;
}
.tree ul:nth-child(2) li:nth-child(1) {
  height: 2.2727272727vh;
  animation-delay: -0.21875s;
}
.tree ul:nth-child(2) li:nth-child(2) {
  height: 2.7272727273vh;
  animation-delay: -0.4375s;
}
.tree ul:nth-child(2) li:nth-child(3) {
  height: 3.1818181818vh;
  animation-delay: -0.65625s;
}
.tree ul:nth-child(2) li:nth-child(4) {
  height: 3.6363636364vh;
  animation-delay: -0.875s;
}
.tree ul:nth-child(2) li:nth-child(5) {
  height: 4.0909090909vh;
  animation-delay: -1.09375s;
}
.tree ul:nth-child(2) li:nth-child(6) {
  height: 4.5454545455vh;
  animation-delay: -1.3125s;
}
.tree ul:nth-child(2) li:nth-child(7) {
  height: 5vh;
  animation-delay: -1.53125s;
}
.tree ul:nth-child(2) li:nth-child(8) {
  height: 5.4545454545vh;
  animation-delay: -1.75s;
}
.tree ul:nth-child(2) li:nth-child(9) {
  height: 5.9090909091vh;
  animation-delay: -1.96875s;
}
.tree ul:nth-child(2) li:nth-child(10) {
  height: 6.3636363636vh;
  animation-delay: -2.1875s;
}
.tree ul:nth-child(2) li:nth-child(11) {
  height: 6.8181818182vh;
  animation-delay: -2.40625s;
}
.tree ul:nth-child(2) li:nth-child(12) {
  height: 7.2727272727vh;
  animation-delay: -2.625s;
}
.tree ul:nth-child(2) li:nth-child(13) {
  height: 7.7272727273vh;
  animation-delay: -2.84375s;
}
.tree ul:nth-child(2) li:nth-child(14) {
  height: 8.1818181818vh;
  animation-delay: -3.0625s;
}
.tree ul:nth-child(2) li:nth-child(15) {
  height: 8.6363636364vh;
  animation-delay: -3.28125s;
}
.tree ul:nth-child(2) li:nth-child(16) {
  height: 9.0909090909vh;
  animation-delay: -3.5s;
}
.tree ul:nth-child(2) li:nth-child(17) {
  height: 9.5454545455vh;
  animation-delay: -3.71875s;
}
.tree ul:nth-child(2) li:nth-child(18) {
  height: 10vh;
  animation-delay: -3.9375s;
}
.tree ul:nth-child(2) li:nth-child(19) {
  height: 10.4545454545vh;
  animation-delay: -4.15625s;
}
.tree ul:nth-child(2) li:nth-child(20) {
  height: 10.9090909091vh;
  animation-delay: -4.375s;
}
.tree ul:nth-child(2) li:nth-child(21) {
  height: 11.3636363636vh;
  animation-delay: -4.59375s;
}
.tree ul:nth-child(2) li:nth-child(22) {
  height: 11.8181818182vh;
  animation-delay: -4.8125s;
}
.tree ul:nth-child(2) li:nth-child(23) {
  height: 12.2727272727vh;
  animation-delay: -5.03125s;
}
.tree ul:nth-child(2) li:nth-child(24) {
  height: 12.7272727273vh;
  animation-delay: -5.25s;
}
.tree ul:nth-child(2) li:nth-child(25) {
  height: 13.1818181818vh;
  animation-delay: -5.46875s;
}
.tree ul:nth-child(2) li:nth-child(26) {
  height: 13.6363636364vh;
  animation-delay: -5.6875s;
}
.tree ul:nth-child(2) li:nth-child(27) {
  height: 14.0909090909vh;
  animation-delay: -5.90625s;
}
.tree ul:nth-child(2) li:nth-child(28) {
  height: 14.5454545455vh;
  animation-delay: -6.125s;
}
.tree ul:nth-child(2) li:nth-child(29) {
  height: 15vh;
  animation-delay: -6.34375s;
}
.tree ul:nth-child(2) li:nth-child(30) {
  height: 15.4545454545vh;
  animation-delay: -6.5625s;
}
.tree ul:nth-child(2) li:nth-child(31) {
  height: 15.9090909091vh;
  animation-delay: -6.78125s;
}
.tree ul:nth-child(2) li:nth-child(32) {
  height: 16.3636363636vh;
  animation-delay: -7s;
}
.tree ul:nth-child(2) li:nth-child(33) {
  height: 16.8181818182vh;
  animation-delay: -7.21875s;
}
.tree ul:nth-child(2) li:nth-child(34) {
  height: 17.2727272727vh;
  animation-delay: -7.4375s;
}
.tree ul:nth-child(2) li:nth-child(35) {
  height: 17.7272727273vh;
  animation-delay: -7.65625s;
}
.tree ul:nth-child(2) li:nth-child(36) {
  height: 18.1818181818vh;
  animation-delay: -7.875s;
}
.tree ul:nth-child(2) li:nth-child(37) {
  height: 18.6363636364vh;
  animation-delay: -8.09375s;
}
.tree ul:nth-child(2) li:nth-child(38) {
  height: 19.0909090909vh;
  animation-delay: -8.3125s;
}
.tree ul:nth-child(2) li:nth-child(39) {
  height: 19.5454545455vh;
  animation-delay: -8.53125s;
}
.tree ul:nth-child(2) li:nth-child(40) {
  height: 20vh;
  animation-delay: -8.75s;
}
.tree ul:nth-child(2) li:nth-child(41) {
  height: 20.4545454545vh;
  animation-delay: -8.96875s;
}
.tree ul:nth-child(2) li:nth-child(42) {
  height: 20.9090909091vh;
  animation-delay: -9.1875s;
}
.tree ul:nth-child(2) li:nth-child(43) {
  height: 21.3636363636vh;
  animation-delay: -9.40625s;
}
.tree ul:nth-child(2) li:nth-child(44) {
  height: 21.8181818182vh;
  animation-delay: -9.625s;
}
.tree ul:nth-child(2) li:nth-child(45) {
  height: 22.2727272727vh;
  animation-delay: -9.84375s;
}
.tree ul:nth-child(2) li:nth-child(46) {
  height: 22.7272727273vh;
  animation-delay: -10.0625s;
}
.tree ul:nth-child(2) li:nth-child(47) {
  height: 23.1818181818vh;
  animation-delay: -10.28125s;
}
.tree ul:nth-child(2) li:nth-child(48) {
  height: 23.6363636364vh;
  animation-delay: -10.5s;
}
.tree ul:nth-child(2) li:nth-child(49) {
  height: 24.0909090909vh;
  animation-delay: -10.71875s;
}
.tree ul:nth-child(2) li:nth-child(50) {
  height: 24.5454545455vh;
  animation-delay: -10.9375s;
}
.tree ul:nth-child(2) li:nth-child(51) {
  height: 25vh;
  animation-delay: -11.15625s;
}
.tree ul:nth-child(2) li:nth-child(52) {
  height: 25.4545454545vh;
  animation-delay: -11.375s;
}
.tree ul:nth-child(2) li:nth-child(53) {
  height: 25.9090909091vh;
  animation-delay: -11.59375s;
}
.tree ul:nth-child(2) li:nth-child(54) {
  height: 26.3636363636vh;
  animation-delay: -11.8125s;
}
.tree ul:nth-child(2) li:nth-child(55) {
  height: 26.8181818182vh;
  animation-delay: -12.03125s;
}
.tree ul:nth-child(2) li:nth-child(56) {
  height: 27.2727272727vh;
  animation-delay: -12.25s;
}
.tree ul:nth-child(2) li:nth-child(57) {
  height: 27.7272727273vh;
  animation-delay: -12.46875s;
}
.tree ul:nth-child(2) li:nth-child(58) {
  height: 28.1818181818vh;
  animation-delay: -12.6875s;
}
.tree ul:nth-child(2) li:nth-child(59) {
  height: 28.6363636364vh;
  animation-delay: -12.90625s;
}
.tree ul:nth-child(2) li:nth-child(60) {
  height: 29.0909090909vh;
  animation-delay: -13.125s;
}
.tree ul:nth-child(2) li:nth-child(61) {
  height: 29.5454545455vh;
  animation-delay: -13.34375s;
}
.tree ul:nth-child(2) li:nth-child(62) {
  height: 30vh;
  animation-delay: -13.5625s;
}
.tree ul:nth-child(2) li:nth-child(63) {
  height: 30.4545454545vh;
  animation-delay: -13.78125s;
}
.tree ul:nth-child(2) li:nth-child(64) {
  height: 30.9090909091vh;
  animation-delay: -14s;
}
.tree ul:nth-child(2) li:nth-child(65) {
  height: 31.3636363636vh;
  animation-delay: -14.21875s;
}
.tree ul:nth-child(2) li:nth-child(66) {
  height: 31.8181818182vh;
  animation-delay: -14.4375s;
}
.tree ul:nth-child(2) li:nth-child(67) {
  height: 32.2727272727vh;
  animation-delay: -14.65625s;
}
.tree ul:nth-child(2) li:nth-child(68) {
  height: 32.7272727273vh;
  animation-delay: -14.875s;
}
.tree ul:nth-child(2) li:nth-child(69) {
  height: 33.1818181818vh;
  animation-delay: -15.09375s;
}
.tree ul:nth-child(2) li:nth-child(70) {
  height: 33.6363636364vh;
  animation-delay: -15.3125s;
}
.tree ul:nth-child(2) li:nth-child(71) {
  height: 34.0909090909vh;
  animation-delay: -15.53125s;
}
.tree ul:nth-child(2) li:nth-child(72) {
  height: 34.5454545455vh;
  animation-delay: -15.75s;
}
.tree ul:nth-child(2) li:nth-child(73) {
  height: 35vh;
  animation-delay: -15.96875s;
}
.tree ul:nth-child(2) li:nth-child(74) {
  height: 35.4545454545vh;
  animation-delay: -16.1875s;
}
.tree ul:nth-child(2) li:nth-child(75) {
  height: 35.9090909091vh;
  animation-delay: -16.40625s;
}
.tree ul:nth-child(2) li:nth-child(76) {
  height: 36.3636363636vh;
  animation-delay: -16.625s;
}
.tree ul:nth-child(2) li:nth-child(77) {
  height: 36.8181818182vh;
  animation-delay: -16.84375s;
}
.tree ul:nth-child(2) li:nth-child(78) {
  height: 37.2727272727vh;
  animation-delay: -17.0625s;
}
.tree ul:nth-child(2) li:nth-child(79) {
  height: 37.7272727273vh;
  animation-delay: -17.28125s;
}
.tree ul:nth-child(2) li:nth-child(80) {
  height: 38.1818181818vh;
  animation-delay: -17.5s;
}
.tree ul:nth-child(2) li:nth-child(81) {
  height: 38.6363636364vh;
  animation-delay: -17.71875s;
}
.tree ul:nth-child(2) li:nth-child(82) {
  height: 39.0909090909vh;
  animation-delay: -17.9375s;
}
.tree ul:nth-child(2) li:nth-child(83) {
  height: 39.5454545455vh;
  animation-delay: -18.15625s;
}
.tree ul:nth-child(2) li:nth-child(84) {
  height: 40vh;
  animation-delay: -18.375s;
}
.tree ul:nth-child(2) li:nth-child(85) {
  height: 40.4545454545vh;
  animation-delay: -18.59375s;
}
.tree ul:nth-child(2) li:nth-child(86) {
  height: 40.9090909091vh;
  animation-delay: -18.8125s;
}
.tree ul:nth-child(2) li:nth-child(87) {
  height: 41.3636363636vh;
  animation-delay: -19.03125s;
}
.tree ul:nth-child(2) li:nth-child(88) {
  height: 41.8181818182vh;
  animation-delay: -19.25s;
}
.tree ul:nth-child(2) li:nth-child(89) {
  height: 42.2727272727vh;
  animation-delay: -19.46875s;
}
.tree ul:nth-child(2) li:nth-child(90) {
  height: 42.7272727273vh;
  animation-delay: -19.6875s;
}
.tree ul:nth-child(2) li:nth-child(91) {
  height: 43.1818181818vh;
  animation-delay: -19.90625s;
}
.tree ul:nth-child(2) li:nth-child(92) {
  height: 43.6363636364vh;
  animation-delay: -20.125s;
}
.tree ul:nth-child(2) li:nth-child(93) {
  height: 44.0909090909vh;
  animation-delay: -20.34375s;
}
.tree ul:nth-child(2) li:nth-child(94) {
  height: 44.5454545455vh;
  animation-delay: -20.5625s;
}
.tree ul:nth-child(2) li:nth-child(95) {
  height: 45vh;
  animation-delay: -20.78125s;
}
.tree ul:nth-child(2) li:nth-child(96) {
  height: 45.4545454545vh;
  animation-delay: -21s;
}
.tree ul:nth-child(2) li:nth-child(97) {
  height: 45.9090909091vh;
  animation-delay: -21.21875s;
}
.tree ul:nth-child(2) li:nth-child(98) {
  height: 46.3636363636vh;
  animation-delay: -21.4375s;
}
.tree ul:nth-child(2) li:nth-child(99) {
  height: 46.8181818182vh;
  animation-delay: -21.65625s;
}
.tree ul:nth-child(2) li:nth-child(100) {
  height: 47.2727272727vh;
  animation-delay: -21.875s;
}
.tree ul:nth-child(2) li:nth-child(101) {
  height: 47.7272727273vh;
  animation-delay: -22.09375s;
}
.tree ul:nth-child(2) li:nth-child(102) {
  height: 48.1818181818vh;
  animation-delay: -22.3125s;
}
.tree ul:nth-child(2) li:nth-child(103) {
  height: 48.6363636364vh;
  animation-delay: -22.53125s;
}
.tree ul:nth-child(2) li:nth-child(104) {
  height: 49.0909090909vh;
  animation-delay: -22.75s;
}
.tree ul:nth-child(2) li:nth-child(105) {
  height: 49.5454545455vh;
  animation-delay: -22.96875s;
}
.tree ul:nth-child(2) li:nth-child(106) {
  height: 50vh;
  animation-delay: -23.1875s;
}
.tree ul:nth-child(2) li:nth-child(107) {
  height: 50.4545454545vh;
  animation-delay: -23.40625s;
}
.tree ul:nth-child(2) li:nth-child(108) {
  height: 50.9090909091vh;
  animation-delay: -23.625s;
}
.tree ul:nth-child(2) li:nth-child(109) {
  height: 51.3636363636vh;
  animation-delay: -23.84375s;
}
.tree ul:nth-child(2) li:nth-child(110) {
  height: 51.8181818182vh;
  animation-delay: -24.0625s;
}
.tree ul:nth-child(2) li:nth-child(111) {
  height: 52.2727272727vh;
  animation-delay: -24.28125s;
}
.tree ul:nth-child(2) li:nth-child(112) {
  height: 52.7272727273vh;
  animation-delay: -24.5s;
}
.tree ul:nth-child(2) li:nth-child(113) {
  height: 53.1818181818vh;
  animation-delay: -24.71875s;
}
.tree ul:nth-child(2) li:nth-child(114) {
  height: 53.6363636364vh;
  animation-delay: -24.9375s;
}
.tree ul:nth-child(2) li:nth-child(115) {
  height: 54.0909090909vh;
  animation-delay: -25.15625s;
}
.tree ul:nth-child(2) li:nth-child(116) {
  height: 54.5454545455vh;
  animation-delay: -25.375s;
}
.tree ul:nth-child(2) li:nth-child(117) {
  height: 55vh;
  animation-delay: -25.59375s;
}
.tree ul:nth-child(2) li:nth-child(118) {
  height: 55.4545454545vh;
  animation-delay: -25.8125s;
}
.tree ul:nth-child(2) li:nth-child(119) {
  height: 55.9090909091vh;
  animation-delay: -26.03125s;
}
.tree ul:nth-child(2) li:nth-child(120) {
  height: 56.3636363636vh;
  animation-delay: -26.25s;
}
.tree ul:nth-child(2) li:nth-child(121) {
  height: 56.8181818182vh;
  animation-delay: -26.46875s;
}
.tree ul:nth-child(2) li:nth-child(122) {
  height: 57.2727272727vh;
  animation-delay: -26.6875s;
}
.tree ul:nth-child(2) li:nth-child(123) {
  height: 57.7272727273vh;
  animation-delay: -26.90625s;
}
.tree ul:nth-child(2) li:nth-child(124) {
  height: 58.1818181818vh;
  animation-delay: -27.125s;
}
.tree ul:nth-child(2) li:nth-child(125) {
  height: 58.6363636364vh;
  animation-delay: -27.34375s;
}
.tree ul:nth-child(2) li:nth-child(126) {
  height: 59.0909090909vh;
  animation-delay: -27.5625s;
}
.tree ul:nth-child(2) li:nth-child(127) {
  height: 59.5454545455vh;
  animation-delay: -27.78125s;
}
.tree ul:nth-child(2) li:nth-child(128) {
  height: 60vh;
  animation-delay: -28s;
}
.tree ul:nth-child(2) li:before {
  content: "";
  position: absolute;
  left: -1px;
  bottom: 1px;
  width: 3px;
  height: 3px;
}
.tree ul:nth-child(2) li:nth-child(4n):before {
  background: #D8334A;
}
.tree ul:nth-child(2) li:nth-child(4n+1):before {
  background: #FFCE54;
}
.tree ul:nth-child(2) li:nth-child(4n+2):before {
  background: #2ECC71;
}
.tree ul:nth-child(2) li:nth-child(4n+3):before {
  background: #5D9CEC;
}

@keyframes swing {
  0%, 100% {
    transform: rotate(-30deg);
  }
  5%, 45% {
    opacity: 0.25;
  }
  50%, 100%, 0% {
    opacity: 1;
  }
  50% {
    transform: rotate(30deg);
  }
}